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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1949 | 1 |
| 1950 | 1 |
| 1951 | 1 |
| 1952 | 2 |
| 1953 | 1 |
| 1957 | 2 |
| 1959 | 1 |
| 1961 | 1 |
| 1962 | 4 |
| 1963 | 4 |
| 1964 | 17 |
| 1965 | 2 |
| 1966 | 1 |
| 1967 | 1 |
| 1971 | 1 |
| 1972 | 1 |
| 1974 | 5 |
| 1975 | 13 |
| 1976 | 101 |
| 1977 | 257 |
| 1978 | 250 |
| 1979 | 265 |
| 1980 | 214 |
| 1981 | 215 |
| 1982 | 210 |
| 1983 | 199 |
| 1984 | 156 |
| 1985 | 146 |
| 1986 | 146 |
| 1987 | 171 |
| 1988 | 245 |
| 1989 | 498 |
| 1990 | 249 |
| 1991 | 274 |
| 1992 | 268 |
| 1993 | 264 |
| 1994 | 290 |
| 1995 | 323 |
| 1996 | 307 |
| 1997 | 262 |
| 1998 | 257 |
| 1999 | 234 |
| 2000 | 277 |
| 2001 | 303 |
| 2002 | 322 |
| 2003 | 329 |
| 2004 | 372 |
| 2005 | 410 |
| 2006 | 415 |
| 2007 | 354 |
| 2008 | 397 |
| 2009 | 445 |
| 2010 | 432 |
| 2011 | 410 |
| 2012 | 429 |
| 2013 | 374 |
| 2014 | 335 |
| 2015 | 366 |
| 2016 | 342 |
| 2017 | 299 |
| 2018 | 264 |
| 2019 | 311 |
| 2020 | 275 |
| 2021 | 266 |
| 2022 | 165 |
| 2023 | 188 |
| 2024 | 171 |